814399 has 2 divisors, whose sum is σ = 814400. Its totient is φ = 814398.

The previous prime is 814393. The next prime is 814403. The reversal of 814399 is 993418.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 814399 - 2⁵ = 814367 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407199 + 407200.

It is an arithmetic number, because the mean of its divisors is an integer number (407200).

2⁸¹⁴³⁹⁹ is an apocalyptic number.

814399 is a deficient number, since it is larger than the sum of its proper divisors (1).

814399 is an equidigital number, since it uses as much as digits as its factorization.

814399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 814399 is about 902.4405797613. The cubic root of 814399 is about 93.3854201893.

The spelling of 814399 in words is "eight hundred fourteen thousand, three hundred ninety-nine".